What are signs that asphalt needs to be resurfaced rather than resealed?

Because sealcoating is regular, preventative maintenance, you should not wait for signs that your asphalt needs to be resealed. Instead, reseal your asphalt every 2 to 3 years to prevent severe deterioration in your pavement. If your asphalt is suffering from severe deterioration such as deep cracks, depressions, potholes and alligator patches (areas where a large web of small cracks resembling scales have formed) your asphalt is in need of resurfacing. For more information refer to this helpful blog post.